Baizhu is a well-known doctor and the owner of Bubu Pharmacy in Liyue Harbor. He is renowned for his encyclopedic medicinal knowledge and his ability to provide effective medicines and cures to the people of Liyue. He is accompanied by Changsheng, a white snake that can speak and is bound to him by contract. Baizhu serves as the guardian of Qiqi, a young girl turned into a zombie, whom he took in and cares for. As a playable character, he is a 5-star Dendro Catalyst user who functions as a support character, providing powerful healing, shields, and off-field Dendro application to his team. His abilities include summoning a Gossamer Sprite that deals Dendro damage and heals allies based on his maximum HP. Baizhu is particularly interested in understanding eternal life, a pursuit he deepened after Qiqi came into his life.